Conveyer.



No. 763,268. I PATENTED JUNE 21, 1904.

J. M. EDWARDS. V

I OONVBYER.

Arrmonmn FILED MAR. 24. 1904.

N0 MODEL.

attaining UNITED STATES Patented June 21, 1904.

JAMES M. EDWARDS, OF NEW YORK, N. Y.

CONVEYER.

SPECIFICATION forming part of Letters Patent No. 763,268, dated June 21,1904.

Application filed March 24, 1904. Serial No. 199,812. (No model.)

To all whom it may concern.-

Be it 'known that I, JAMES M. EDWARDS, of New York, in the county ofQueens and State of New York, have invented certain new and usefulImprovements in Conveyers; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to that class of conveyers employinga rotatablecylinder having an interior spiral or helix rigidly secured to andmovable with the cylinder.

The primary object of the invention is to provide improved, simple, andefficient means for providing the internal periphery of the cylinderwith a spiral or helix, and a further object is to provide improvedmeans for coup-' ling the conveyer-sections.

1n the accompanying drawings, Figure 1 is a side elevation of a conveyermade in accordance with my invention. Fig. 2 is a longitudinal sectionon line 2 2, Fig. 1. Fig. 3 is an end view of one of the sections,showing the coupling. Fig. 4 is a fragmentary detail.

5 is a modification.

Referring to the drawings, 1 designates the conveyer-cylinder, primarilydesigned for the transportation of grain in mills. This is shown in theform of a helically-wound band, preferably of metal, forming a rightcylinder.

2 designates the spiral or helix. As shown in Fig. 2, it consists of anelement separate from the cylinder and having its flights orconvolutions provided at their outer edges with a flange 3, designed tobe accommodated between the overlapping edges of the band forming thecylinder 1 and secured by rivets or otherwise.

In Fig. 5 I have shown the cylinder provided with the spiral or helix bythe formation of the band constituting the cylinder. In thisconstruction the band is provided with a flange i along one of itsedges. When the band is coiled to form the cylinder, the flange 4projects inwardly and forms the spiral or helix, the adjacent edge ofthe band overlapping that provided with the flange and the two securedby any preferred means, such as rivets. As shown, the flange is formedby cylinder.

bending the edge of the band and cutting notches or serrations in thebent portion to allow for the curvature.

It is known that conveyers of the kind to whichmy invention relates arebetter adapted to certain classes of Work than are those having astationary exterior casing within which rotates the spiral or helixmounted upon a central shaft. This is especially true-in thetransportation of liquids or finely-powdered material requiring thespiral to it flush against the inner periphery of the cylinder.Furthermore, outlet-openings are more readily provided in'a conveyeremploying a rotating WVhere rotating cylinders having the spiral rigidlyheld thereto have been employed, difiiculty has been experienced insecuring the spiral to the cylinder, so as to render the conveyercapable of transporting bulky material without strain upon the securingmeans and causing the spiral to become bent or twisted out of place. Bymy invention this difficulty is obviated, since the spiral is secured atevery point to the cylinder and the eiiiciency of the conveyer therebygreatly enhanced.

My invention contemplates employing a series of sections of theconveyer-cylinder provided with an internal spiral, such sections beingconnected by couplings. The sections of the cylinder are provided attheir ends with a pair of rigidly-secured collars 5 5, having peripheralflanges 6, formed with recesses 7. The space intermediate theoppositely-disposed flanges 6 constitutes a channel 8, accommodatingroller-bearings 9, whose spindles are designed to fit within therecesses 7 to prevent the rollers from moving out of their relativepositions.

10 is a shaft-hanger or bracket designed to be suitably suspended andshown as comprising two semicircular parts 12, secured by bolts passedthrough the flanges at their meeting edges. The inner periphery of thebracket is formed similarly to the collars 5-that is, it has flanges 13and an intermediate channel 1 1 to accommodate the roller-bearings. Ifdesired, balls may be substituted for the rollers by making the channels8 and 14 circular and dispensing with the recesses 7. As shown in Fig.2, the collars 5 5 are secured together by a bolt 15, the cylinder 1extending about to the meeting faces of the collars. Another section maybe connected by inserting it within the collar 5 and securing the latterthereto. The shaft-hanger is of course not only for the purpose ofcoupling sections, but is to be employed as required by the length ofthe cylinder.

At 16 l have shown a sleeve surrounding the cylinder and normallyclosing an outlet therein. Any suitable means may be employed forshifting the sleeve to open and close the outlet. Any one or more of thesections may be of perforated metal to provide a combined sieve andoutlet. 17 is a bandwheel fast on the cylinder designed to efi'ect therotation of the latter by suitable belting. This band-wheel or sprocket,if desired, may be located at any point of the cylinder.

I claim as my invention- 1. In a conveyer, a rotatable cylinderconsisting of a band helically wound and having its meeting edgesoverlapping and secured together, such band being provided at suchmeeting edges with an internal spiral.

2. In a convcyer, a rotatable cylinder consisting of a helically-woundband, and a spiral Within the cylinder having its flights rigidlysecured between the meeting edges of the convolutions of the band.

3. In a conveyer, a rotatable cylinder consisting of a helically-wonndband, and a spiral within the cylinder having the outer edges of itsflights formed with flanges designed to be rigidly secured between theoverlapping edges of the convolutions of the band.

4. In a conveyer, a rotatable cylinder provided with an internal spiral,collars arranged in pairs on such cylinder and rigidly secured to thelatter, such collars having their periphcries channeled, a circularhanger or bracket inclosing said collars and having a channel on itsinternal periphery designed to register with the channel of saidcollars, and roller bearings accommodated by said channels.

5. In a conveyor, a rotatable cylinder provided with an internal spiral,collars arranged in pairs on such cylinder and rigidly secured to thelatter, such collars having peripheral flanges formed with recesses, achannel being provided intermediate said flanges, a circular hanger orbracket inclosing said collars and having a channel on its internalperiphery designed to register With the channel of said collars, andcylinder bearings within said channels and having their spindlesaccommodated by-said recesses.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

JAMES M. EDIVARDS.

Witnesses:

FREDERICK S. STITT, GRAFTON L. MGGILL.

